The 1978 Seiko SilverWave Z 7123-8070 Quartz Watch is a vintage timepiece from Japan featuring a metallic blue sunburst dial and a polished silver stainless steel case. With stick indexes and day/date features, this classic round watch is suitable for both dress/formal and casual occasions. The watch has a 36 or 37mm case size, a screwback caseback, and a stainless steel bracelet band. The Seiko SilverWave model is a quartz movement wristwatch that exudes a timeless style with a touch of retro charm.